_includes/post.css in jekyll-theme-plain-0.4.0 vs _includes/post.css in jekyll-theme-plain-0.5.0

@@ -1,9 +1,4 @@
 
       pre {
-        word-wrap: break-word;
-        overflow-wrap: break-word;
-        white-space: -moz-pre-wrap;
-        white-space: -pre-wrap;
-        white-space: -o-pre-wrap;
         white-space: pre-wrap;
       }